2 years ago

Help with me 11 please

Mathematics

1 answer:

tino4ka555 [31]2 years ago

7 0

X + y + z = 27
x = 2z
y = 3 + z
2z + 3 + z + z = 27 ; 4z = 24; z = 6 youngest
x = 12 oldest
y = 9 middle one

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